2010 Cadillac CTS Sedan AWD V6-3.6L Page 746

2010 Cadillac CTS Sedan AWD V6-3.6L Page 746

module.

5. Install a 3A fused jumper wire between the signal circuit terminal B and the 5-volt reference circuit terminal A. Verify the scan tool position

sensor parameter is greater than 4.75 volts.

瀚慖f less that the specified range, test the signal circuit for a short to ground or an open high resistance. If all circuits test normal replace the

ESC module.

6. If all circuits test normal, test or replace the applicable suspension position sensor.

Component Testing

1. Install a 3A fused jumper wire between the 5-volt reference terminal A and 5 volts. Install a jumper wire between the low reference terminal

C and ground.

2. Sweep the suspension position sensor through the entire range while monitoring the voltage between the signal terminal B and the low

reference terminal C. The range should vary between 0.35-4.75 volts without any spikes or dropouts.

瀚慖f not within the specified range or if it is erratic, replace the suspension position sensor.

Repair Instructions

* Electronic Suspension Front Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Front Position Sensor

Replacement)

* Electronic Suspension Rear Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair/Electronic Suspension Rear Position Sensor

Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming

Repair Verification

1. Install any components or connectors that have been removed or replaced during diagnosis.

2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.

3. Clear the DTCs.

4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.

This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.

5. Turn OFF the ignition for 60 seconds.

6. Turn ON the ignition.

7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in

order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the and perform the appropriate diagnostic

procedure.

C0625

DTC C0615, C0620, C0625, or C0630

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0615 08

- Left Front Position Sensor Circuit - Signal Invalid

DTC C0615 55

- Left Front Position Sensor Circuit - Expected Number Of Transitions Not Reached

DTC C0620 08

- Right Front Position Sensor Circuit - Signal Invalid

DTC C0620 55

- Right Front Position Sensor Circuit - Expected Number Of Transitions Not Reached